The packaging machine is equipped with self-automatic detection, information feedback and other functions. During production operation, if there are no packaging bags or the packaging bags are not opened, the detection device will control neither filling nor sealing. The operation status will be displayed in real time and the machine will automatically stop. Saving packaging materials and raw materials ensures the environmental protection and raw material pollution of the packaging site. 2. Screw metering device: The powder screw filling device is an independent metering and filling system. This device is driven by a high-precision stepping motor and filled by a screw. Within the machine's measurement range, different measurement ranges can be accomplished by several screws of different sizes. The operation is simple, convenient and precise. 3. Screw feeder: The filling motor drives the screw, featuring accurate positioning, high precision, fast speed, large torque, long service life, adjustable speed, and good stability. By replacing the screw accessories, it can adapt to various materials ranging from ultrafine powder to large particles. 4. Quick change of packaging bag specifications: The easy and quick debugging of the mechanical hand device overcomes the disadvantage of weight changes caused by variations in material specific gravity. 5. Variable frequency speed regulation: This machine is equipped with a variable frequency speed regulation device. The packaging weight can be adjusted steplessly at any time, and the working state can be changed freely at any time. The operation is convenient. 6. The packaging machine can produce various bag types, such as three-dimensional bags, flat bags, handbags, zipper bags, four-side sealed bags, three-side sealed bags, paper bags, M-shaped bags and other pre-made bags made of composite bag films. 7. Horizontal bag feeding method: The storage bag can hold more packaging bags, has lower requirements for the quality of the finished bags, and has a high rate of bag separation and loading. 8. Dust does not leak out. The dust suction device at the filling outlet protects the workshop environment. 9. Finished product conveying: Stable operation, anti-interference, high weighing accuracy, convenient and intuitive operation.